Economics of Marine Biology - S4-E7
Audio problem: After Abed's fraternity runs loose, making Archie spill soda on his shoes, he expresses his dismay loudly, with commotion of the frat still being heard. Suddenly there is a very noticeable and abrupt audio cut right when Annie says her next line. (00:10:45)
Economics of Marine Biology - S4-E7
Audio problem: Coach Chapman makes his way up to the white board to introduce himself and the class topic. We hear him say "Welcome to P.E.E." but his mouth doesn't open at all.
Audio problem: Before Abed returns to the dance, he says to Rachel "Okay, bye, " and even though it is in a profile, his mouth movements don't match the words as it looks like he says more than that. (00:14:55)
Answer: The implication is that Jeff will still be teaching at Greendale after Annie and Abed leave. As for who became vice dean? It's never shown, since it's not really important to the series.
TedStixon